AlCrSiN/Cr周期复合薄膜的制备及红外辐射特性和摩擦磨损性能

Preparation,Infrared Radiation Characteristics,and Friction and Wear Properties of AlCrSiN/Cr Periodic Composite Thin Films

红外隐身技术是现代隐身技术的重要一环,它能有效降低目标被红外侦察技术发现的风险。然而,传统的红外隐身材料虽然具有较低的红外发射率,但在耐磨损、抗高温氧化、抗腐蚀等方面表现不佳。尤其是在沙漠、火山等恶劣环境下,这些材料很难同时满足红外隐身性能和功能性的需求。为此,本工作采用电弧离子镀技术制备了AlCrSiN/Cr周期复合薄膜,并研究了不同循环周期对薄膜红外辐射特性、力学性能和摩擦磨损性能的影响。研究结果表明:AlCrSiN/Cr周期复合薄膜中的相结构主要由AlCrN固溶相和Cr金属相两种构成,其平均红外发射率较低(0.27),硬度较高(1962HV),薄膜与基底之间的结合力超过100 N。随着周期数的增加,薄膜的摩擦磨损行为趋于稳定,在三周期时,磨损率达到2.78×10^(-6) mm^(3)/(N·m)的较低值。

Infrared stealth technology can effectively lower the risk of being spotted by infrared sensors,which is a key component of modern stealth technology.However,conventional infrared stealth materials have drawbacks such as low wear resistance,poor high temperature oxidation resistance and corrosion resistance,despite their low infrared emissivity.Particularly,in harsh environments like deserts and volcanoes,the conventional infrared stealth materials struggle to achieve both infrared stealth and functionality,simultaneously.To address this issue,the AlCrSiN/Cr periodic composite thin films were fabricated by arc ion plating technology,and the effect of the cycle periods on their infrared radiation properties,mechanical properties and friction wear performance were investigated.The results show that the AlCrSiN/Cr periodic composite thin films have a phase structure consisting of AlCrN solid solution phase and Cr metal phase.They have a low average infrared emissivity(0.27),a high hardness(1962 HV),and a strong bonding force between the film and the substrate(over 100 N).The friction wear behavior of the films stabilizes as the cycle number increases.At three cycles,the films have a low wear rate of 2.78×10^(-6) mm^(3)/(N·m).